The recipe I mix menthol with is typically only .5%, I'm not concerned either.Not clear. If it's the minty menthol that keeps her from smoking, then no. If she just likes it but could be happy with some other flavor or with very little flavoring, then have her read this thread. On paper, menthol is approved for inhalation... Your call. I still vape mint and menthol, but I use just a hint of flavoring anyway, so I'm not at all concerned.
New 'baddie'. Mint/ menthol flavor causes cancer.